<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			* {
				padding: 0px;
				margin: 0px;
				list-style: none;
				box-sizing: border-box;
				text-decoration: none;
			}

			.search {
				width: 300px;
				height: 50px;
				border: 4px solid #f00;
				float: left;
				
			}
			
			.btn {
				width: 80px;
				height: 50px;
				border: none;
				background-color: #f00;
				color: #fff;
				float: left;
			}

			.input-box {
				width: 1200px;
				margin: auto;
				padding: 10px;
				display: flow-root;
			}
		</style>
	</head>
	<body>
		<main>
			<div class="input-box">
				<input class="search" type="search" placeholder="书名、作者、出版社、ISBN、文具">
				<button class="btn">搜索</button>
			</div>
		</main>
	</body>
</html>
